Of same place



. (No Model.)

I J. L. STEVENSON.

BRICK.

No. 480,879. Patented Aug. 16, 1892.

NITED STATES PATENT O FICE.

JOHN L. STEVENSON, OF OHIOAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO JAMESE. YORK, OF SAME PLACE.

BRICK.

SPECIFICATION forming part of Letters Patent No. 480,879, dated August16, 1892- Application filed December 12, 1891. Serial No. 414,804- (Nomodel.)

' to the accompanying drawings, and to the let ters of reference markedthereon, which form a part of this specification.

This invention relates to improvements in brick-of the type shown anddescribed in an application for a patent filed in the Patent Office bythe present inventor concurrently herewith.

The object of the invention is to provide a brick which may be laid inhorizontal layers, so as to form a structure having continuous i iuesfrom top to bottom thereof and in which the vertical joints between thebrick of any layer will be out of line with the joints of the brick inthe layers next above and below it, so that the bricks of the severallayers will break joints.

The invention consists in the peculiar form of the brick used,consisting of a longitudinal portion or shank and two oblique lateralprojections at both ends thereof, said projections making an angle ofsubstantially one hundred and twenty degrees with the longitudinalportion of the brick and those on the same end thereof with each other.

In the accompanying drawings a brick of the improved constructionforming the subject of this application is fully illustrated.

Figure 1 is a side view of such .a brick; Fig. 2, a top plan viewthereof; Fig. 3, an end view thereof; and Fig. 4: shows the manner inwhich brick of this form will preferably be laid so as to form astructure embodying the features which are the objects of thisinventlon.

As shown, the brick consists of a longitudinal portion or shank A,having two lateral projections a at each end thereof. These projectionsare arranged symmetrically on the ends of the brick from which theyproject, said projections forming with the longitudinal portion of thebrick and those on the same end thereof with each other angles of onehundred and twenty degrees.

To compass the object of the 1nvent1on, 1t

is obvious that the brick will have to be lald so as to form hexagonalflues and that the longitudinal portions of the brick will be de- 5diagrammatic view showing the manner of laying the'brick it appears thatit is impossible to so lay brick of the form constituting the subject ofthis application that all of the joints of any layer will break withthose of the layers above and below it; but the continuous joints may beso changed that 1 n the course of three layers there will be no ointscontinuous from top to bottom thereof, no joint being continuous throughmore than two layers.

The size of these bricks may be varied so as to meet the requirements;but a desirable sizeis such as willforma flue measuring from one angleto the opposite angle about ten inchesthat is to say, a longitudinalportion about five inches long and projections therefrom two andone-half inches long. The width and thickness of the brick may also bevaried, as desired; but a good proportion 1s considered to be athickness of about five inches and awidth one-half of the thickness.

In view of the application above referred toI do not desire to claim aspart of my present invention anything therein claimed, but desire tolimit myself to the particular form of construction herein shown.

The main feature of my invention conslsts of a brick having obliqueprojections at each end and which are adapted to be placed together inlayers, so as to break joints, and at the same time-form a checkeredbody or cellular filling for stoves having continuous parallel flues,and the brick may be modified in details of its shape and proportionswithout departure from my invention, provided 11; 1s so made withoblique arms at each end, arranged to form such continuous fluesas, forinstance, the shape of the brick may be so modified as to form circularflues, while still whereby a structure may be formed consistpreservingthe several Characteristics stated. ing of flues separated by Walls ofequal thick- I claim-- I V ness, substantially as described. 7 A brickconsisting of a central longitudinal In testimony that I claim theforegoing as 5 part and obliquely-arranged lateral projecmy invention Iafiix my signature in presence I 5 tions at each end thereof, theprojections at of two witnesses.

either end of said longitudinal part being ar- JOHN L. STEVENSON. rangedat equal angles with each other and Witnesses: with the saidlongitudinal part and being M. E. DAYTON,

50 equal in thickness to the longitudinal part, TAYLOR E. BROWN.

